Smoke-consuming furnace.



W. E. SUDLOW & 11.1. WHITE.

SMOKE GONSUMING FURNACE.

APPLICATION FILED OUT; 5, 1909.

984,979. Patented Feb.21, 1911.

3 SHEE'IB-BHEET 1.

185 Ncmms PETERS C0,, WAsHlncrorv, n. c.

W. E. SUDLOW & H. J. WHITE.

. SMOKE GONSUMING FURNACE.

APPLICATION FILED 0013.5, 1909.

' 984,979. Patented Feb. 21, 1911.

3 SHEETS-SHEET 2.

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SMOKE OONSUMING FUENAOB. APPLICATION FILED 001'. 5, 1909.

Patented Feb. 21, 1911.

3 SHEETS-SHEET 3.

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gym:- Jfezzry cf Whig. V j 9.. 74999925999244 Guam STATES PATENT OFFICE.

WILLIAM E. SUIDLOVV, OF WASHINGTON, AND HENRY J. WHITE, 0F AUGUSTA,GEORGIA.

SMOKE-CONSUMING FURNACE.

Specification of Letters Patent.

Application filed October 5, 1909.

To all whom it may concern:

Be it known that we, TVILLIAM E. SUDLow, a British subject, and HENRY J.WHITE, a citizen of the United States, residing, VVIL- LIAM E. SUDLow,at \Vashington, Georgia, and HENRY J. WHITE at Augusta, Georgia, haveinvented new and useful Improvements in Smoke-Consuming Furnaces, ofwhich the following is a specification.

This invention relates to smoke consuming furnaces, the object of theinvention being to provide a construction of furnace whereby a moreperfect combustion of fuel and elimination of carbon, or as it iscommonly termed, smoke is effected, by causing the unconsumed gasesafter leaving the fire bed to be directed into' contact with highlyheated surfaces of fire-resisting material be fore allowing the same tocome in contact with any portion of the boiler, whereby the gases arethoroughly heated and caused to ignite, thereby eliminating the smokenuisance, economizing in fuel and also greatly increasing the life anddurability of the boiler.

With the above and other objects in view, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction combination and arrangement of parts as herein fullydescribed, illustrated and claimed.

In the accompanying drawings :-Figure 1 is a central verticallongitudinal section through a smoke consuming furnace embodyingthepresent invention. Fig. 2 is a plan view thereof, partly in horizontalsection. Fig. 3 is a front elevation of the furnace, partly in section.

The furnace is constructed out of fire brick or other suitablefire-resisting material and comprises the side walls 1, front wall 2,rear wall 3 and in the construction shown in Fig. 1, the furnace alsocomprises a bridge wall 4 located at the usual point and forming theback wall of the fire box.

5 designates the furnace grate beneath which is the ash pit 6.

7 designates a plurality of fuel openings and 8 other openings leadingto the ash pit.

Extending back from the top of the bridge wall 4 is an elevated floor 9which reaches to the rear wall 10 of the furnace and is supported atintervals by additional walls 11. Extending over the floor 9 is an arch12 or in other words, a transversely curved wall which is arrangedbeneath the boiler 13 and extends lengthwise of the boiler as shown inFig. 1. In the preferred embodiment of the invention, an inverted archor transversely curved wall 14 is interposed between the wall 12 and thebottom of the boiler, as best illustrated in Fig. 3, thereby forming anarcuate space 15 along which the thoroughly ignited products ofcombustion pass in their first contact with the shell of the boiler. Thewalls 12 and 14 preferably meet or merge into each other, as shown at 16in Fig. 3, whereby they mutually brace and support each other.

The two arches above described terminate a sufficient distance inadvance of the rear wall 10 to leave an opening 18 up through which theproducts of combustion pass in entering the arcuate space 15. Betweenthefioor 9 and the arch 12 are baflle walls 19. These walls extendvertically between the floor 9 and the arch 12 and project from theopposite side walls 1 inward part way across the space between the sidewalls, as indicated by dotted lines 19 in Fig. 2, thereby causing theproducts of combustion to take an irregular course in passing for thefirst time lengthwise beneath the boiler, the arches 12 and 14preventing the gases at such time from coming in contact with the boilershell. The bridge wall, as well as the floor 9 and the arches 12 and 14and the baffle walls 19 soon become highly heated and as a result, byreason of the gases impinging against the said highly heated surfaces,they are ignited before passing through the space 18 and coming incontact with the boiler 13, as they move along the arcuate space 15.

Upon reaching the front end of the furnace, the products of combustionenter the front connection or chamber 20 and pass thence rearwardthrough the fines of the boiler into the rear connection 21, the frontof which is defined by the rear end of the boiler and the rear wall 10of the furnace, the area of this rear connection 21 being large incomparison with the area of the stack or the passages leading from thefurnace to this chamber, it follows that any soot carried as a solidsuspended in the moving gases will be deposited at this point where thesaid gases will move at a much slower rate than at any other point oftheir travel from the furnace to the stack.

The rear connection or chamber 21 is pro vided at or near its centerwith a dividing battle wall 22 reaching to the top of the being providedwith a blow-off pipe 27 while- -Jthe upper header 26 has leading fromthe chamber 21 andterminating above thebot-- tomfthereof as. showninFig. 1,.causing the,

productsvof combustion after leaving the V fines of the boiler to passdownward on one 7 side of the wall 22 and then upward on the oppositeside thereof between said wall and the rear inclosingwall 23.0f the backcham- V .ber 21'.

Within the chamber 21 there is arranged a feed water pipe heater,comprising a number of vertical water tubes 24: connected at their upperand 'lowerends to horizontal 'pipes 25, the pipes 25 being in turnconnected to headers 26 arranged at the top andbottom of the heater, thelower header 26 opposite ends thereof, pipes 28 and 29 which communicatewith a common feed water pipe 30 that enters the boiler at 31 and isconnected by an elbow 32 to a horizontally disposed distributer or spraypipe 33 having a number of perforation's34=.- This distributer or spraypipe '33 extends horizontally within the boiler about. two inches'abovethe tubes or flues of the boiler so that v it'isalways coveredwith water. i

In addition to its function of supplying 'feed water' to theoboiler,the'construction,

above described provides for blowing ofi, the

boiler periodically as needed, the. perforati'onsSt acting to draw thescum from thesurface of-the water and blow the same outward through theconnections described. 7 35,design'ates,,a bottom blow 0H pipefor Lilleboiler which passes up through the rear end wallr3; of thefurnace andenters the boiler... re

r e 35 designates a feed water pipe entering the lowe'r'header 26 ofthe-heater.

361 designates an outlet orifice for the V productsof combustion, inconnection with j which a' suitable stack may be-.employed.- The boilermay be supported in the'masonry. in any convenient or usual manner andmay be, provided withside supporting lugs 37 for that purpose, although,any other means may be employed for suspending or'supporting the boilerout of contact with" the heated fire-resisting surfaces; If desired, a-

doori38-maybe provided in the front wall of ,thejfurnace to give accessto the adjacent endof the boiler forcleaning and repairing.

The boilermay alsobe provided with the usual number of manholes 39.1

7 By reference'to-Figs. 2' and 3, itwillbeobserved that the sidewallsofthezfurnace are providedwith fresh air passages 40 leading from thetop downward andending in elbows or 130M841 which, lead into the ashpitV beneath the grate,,asshown in Figs. 1 and 3, the said assages being,adapted to be closed cut 0 s 42 {shown in Fig. 3. The baffle walls119are also provided with air ducts43 opening into the space between thefloor '9 arch l2and supplied the airpassing downthe side passages 40above referred to.

The side walls, the arch or arches, the bridge walland theprojectinbaiiie wall, all being removed from the cooling influence of the boileritself may be intensely heated" by the combustion of fuel in the furnaceand gas the temperature of the ases thrown off from the fuel changes,falling by reason of theopening of the furnace doors for the ap-'plication offresh fuel,'orthe cleaning of the fire, or rising when thecombustion of the fuel is perfect, these structures will deliver heat tothe passing gases when the gases'are cooler than said structures orwalls, and said walls will absorb heat from the gases when the latterare hotter than the walls,.resulting in more constant even temperatureof the gases at the point wherethey strike the i boiler and alsoresulting in the ignition of p,

the partly consumed ases thrown off by the furnace. at period of owtemperature.

'As smoke, so called,' is the result of imperfect combustion, saidimperfect combustion being'the result of lower furnace temperatures, andas. the structures or Walls aforesaid will impart heatto'the gases atsuch periods of lower furnace temperature, it follows that the quantityof smoke issuing from the stackcwillbe diminished and also;

that more water will be evaporated per pound of coal burnedthan wouldbethe result with furnaces constructedin the usual mm, A

ner. The more perfect combustion ofifuel will also result in alesseneddeposit of soot in the boiler tubes or flues producing greaterboiler. economy. It will also be seen that water enters the heater atthe bottom and rises through the system of pipes and is delivered intothe top of, the boiler and 'distributed through the spray pipe which isabovethe top of the tubes or fiues. As the combined area of theseverticaYheater tubes,

is much greater than the area of the feed pipe supplying them, thewaterwill flow very slowly through the heater tubes, and the water beingheated by the furnace gases, the

mud and other suspended matter in the water.

willbe precipitatedand sink to the bottom end of these tubes and collectin the mud to the'boiler.

W e claim 1. A smokeconsumingfurnace comprising in combination w1tha'boiler and fire box, a

drum. Therefore, when the feed. water I 1 2 5 pleted, feed. water mustbesupplied promptly transversely curved wall of fire-resisting materialextending lengthwise of and beneath the boiler and forming a heatingflue for the products of combustion, and vertical bafiie wallsprojecting alternately from the opposite side walls of the furnacepartially across the space under the curved wall, and also formingsupports for said curved wall.

2. A smoke consuming furnace comprising in combination with a boiler andfire box, two transversely curved walls of fire-resist.- ing material,curved inversely to each other and extending lengthwise beneath andspaced from the boiler and also located above the fire box and forming aheating flue for the products of combustion.

3. A smoke consuming furnace comprising in combination with a boiler andfire box, two transversely curved walls of fire-resisting materialcurved inversely to each other and extending lengthwise beneath andspaced from the boiler and also located above the fire box, and verticalbaffle walls projecting alternately from the opposite side walls of thefurnace partially across the space beneath said curved walls.

4. A smoke consuming furnace comprising in combination with a boiler andfire box, a

transversely curved wall of fire-resisting material extending lengthwisebeneath and spaced from the boiler and also located above the fire box,and vertical bafiie walls projecting alternately from the opposite sidewall of the furnace partially across the space under the curved wallformed with fresh air ducts therein.

5. A smoke consuming furnace comprising in combination with a boiler andfire box, side walls provided with air passages leading to the spaceunder the grate, means for opening and closing said passages, atransversely curved wall of fire-resisting material extending lengthwisebeneath and spaced from the boiler and also located above the fire box,and baffle walls projecting alternately from the opposite side walls ofthe furnace par tially across the space under the curved wall and formedwith air ducts.

In testimony whereof we aifix our signatures in presence of twowitnesses.

WILLIAM E. SUDLOW. HENRY J. WHITE.

Witnesses:

HARRY SUDLoW, GEO. M. CARL.

